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MAX684EUA from MAXIM,MAXIM - Dallas Semiconductor

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MAX684EUA

Manufacturer: MAXIM, MAX

3.3V-Input to Regulated 5V-Output Charge Pumps

Partnumber Manufacturer Quantity Availability
MAX684EUA MAXIM, MAX 934 In Stock

Description and Introduction

3.3V-Input to Regulated 5V-Output Charge Pumps The MAX684EUA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Package:** 8-pin μMAX  
- **Supply Voltage (VCC):** 1.2V to 5.5V  
- **Reset Threshold Options:** Adjustable or fixed (factory-set at 3.08V, 2.93V, 2.63V, or 1.71V)  
- **Reset Timeout Period:** 140ms (min)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Quiescent Current:** 5μA (typ)  
- **Manual Reset Input:** Active-low (MR)  
- **Output Type:** Active-low, push-pull RESET  

### **Descriptions:**
The MAX684EUA monitors the power supply voltage of a microprocessor and provides a reset signal if the voltage falls below a preset threshold. It ensures reliable system operation by holding the μP in reset until the supply voltage stabilizes. The device includes a manual reset input for external system control.

### **Features:**
- **Low Quiescent Current:** 5μA (typ) for power efficiency.  
- **Adjustable or Fixed Reset Threshold:** Supports multiple voltage monitoring levels.  
- **Manual Reset Input:** Allows external reset triggering.  
- **Wide Operating Voltage Range:** 1.2V to 5.5V.  
- **Guaranteed Reset Output Valid Down to VCC = 1V.**  
- **Small Package:** 8-pin μMAX for space-constrained applications.  
- **No External Components Required:** Simplifies design.  

This information is sourced from the manufacturer's datasheet. For detailed electrical characteristics and application notes, refer to Maxim Integrated's official documentation.

Application Scenarios & Design Considerations

3.3V-Input to Regulated 5V-Output Charge Pumps

Alternative Part Number

  • LTC1754-3.3 --: Regulated 3.3V charge-pump converter in MSOP-8, functionally similar to the MAX684 regulated charge pump; different series and prefix make it easy to distinguish.
  • TPS60110 --: Regulated charge-pump voltage converter with comparable output current and pin-compatible package options; widely available and a common cross for MAX684 designs.
  • ICL7660 --: Classic charge-pump voltage converter in 8-pin packages; lower current capability but a well-known drop-in style alternative for simple charge-pump applications.
  • LM2765 --: Switched-capacitor voltage converter with similar topology and package options; suitable when exact regulation trim is not critical.
  • LTC1550LCMS8 --: Regulated charge pump inverter in an 8-pin MSOP package, functionally similar to the MAX684 for negative supply generation.
  • ICL7660AIBA --: Classic charge pump voltage inverter available in SOIC-8, a widely used drop-in style alternative for negative rail generation.
  • TC7660EOA --: Charge pump voltage converter in SOIC-8 with similar inverting function and broad availability as a cost-effective substitute.

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